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<Title>Depth Bar Chart</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Depth Bar Chart</p>
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<img src="images/depthbar.png" width='500' height='320'>
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This example demonstrates using multiple bar layers with semi-transparent colors to create a depth bar chart.<br><br>
ChartDirector allows an XYChart to containing multiple layers of the same or different types. In this example, all layers are 3D bar layers. The bars are drawn in semi-transparent colors to avoid the bars on the front hiding the bars at the back.
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/depthbar.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%
// The data for the bar chart
double[] data0 = {100, 125, 245, 147, 67};
double[] data1 = {85, 156, 179, 211, 123};
double[] data2 = {97, 87, 56, 267, 157};

// The labels for the bar chart
String[] labels = {"Mon", "Tue", "Wed", "Thu", "Fri"};

// Create a XYChart object of size 500 x 320 pixels
XYChart c = new XYChart(500, 320);

// Set the plotarea at (100, 40) and of size 280 x 240 pixels
c.setPlotArea(100, 40, 280, 240);

// Add a legend box at (405, 100)
c.addLegend(405, 100);

// Add a title to the chart
c.addTitle("Weekday Network Load");

// Add a title to the y axis. Draw the title upright (font angle = 0)
c.yAxis().setTitle("Average\nWorkload\n(MBytes\nPer Hour)").setFontAngle(0);

// Set the labels on the x axis
c.xAxis().setLabels(labels);

// Add three bar layers, each representing one data set. The bars are drawn in semi-transparent
// colors.
c.addBarLayer(data0, 0x808080ff, "Server # 1", 5);
c.addBarLayer(data1, 0x80ff0000, "Server # 2", 5);
c.addBarLayer(data2, 0x8000ff00, "Server # 3", 5);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "",
    "title='{dataSetName} on {xLabel}: {value} MBytes/hour'"));
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Depth Bar Chart&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Depth Bar Chart
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here is the chart image ****** --&gt;
    &lt;%= viewer.renderHTML(response) %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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<br><hr class="separator"><div class="copyright">&copy; 2022 Advanced Software Engineering Limited. All rights reserved.</div>
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